Osaka May weather
Osaka, Japan · May
One of the most comfortable months, neither too hot nor too cold
May in Osaka is one of the most ideal travel months: warm but not sweltering, with many days in the low to mid-20s and still relatively low humidity.
Toward the end of the month, rainy-season “preview” days appear more often. Sunny days feel like early summer, while cloudy or rainy days still feel a bit like spring.
May averages at a glance
Average low
around 15°C
Average high
around 25°C
Average rainfall
around 126 mm
Rainy days
about 8 days
What to wear in May in Osaka
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • For daytime, a T-shirt plus light shirt or cardigan is usually enough.
- • Mornings and evenings can be slightly cool, so pack a thin windbreaker or light jacket.
- • Choose breathable bottoms like jeans, cotton pants, or long skirts so you can walk comfortably even on warmer days.
Travel tips for visiting Osaka in May
- • Sunlight becomes stronger, so sunscreen, a hat, and sunglasses are recommended—even with frequent indoor or subway use, accumulated UV can be tiring.
- • On weekends and holidays, USJ, Dotonbori, and Kyoto get especially crowded; if possible, spread key plans across weekdays.
- • For rainy days, switching to shopping-heavy routes (Namba Parks, Umeda, large malls) makes the schedule much more relaxed.
May weather in Osaka — FAQ
Q. Do I still need long sleeves in May?
A. Yes. While many afternoons are comfortable in short sleeves, mornings, evenings, and indoor AC make at least one light long-sleeve shirt or cardigan necessary.
Q. When should I come to avoid the rainy season?
A. The rainy season usually begins in June, so trips up to mid-May are generally safer. That said, rain can still increase in late May, so always bring an umbrella.
Q. What kind of shoes work best for May?
A. Expect 10,000-20,000 steps a day, so choose breathable sneakers with decent cushioning. Sandals can feel early and heavy boots can be too warm.
Authored by Jiheon Bang
Updated: 2025-12-01
Reviewed using Visual Crossing Weather data and reorganized from a traveler’s perspective.
Weather data is designed to be refreshed roughly every 10 minutes.